Free Oracle APEX Developing Web Applications Questions and Answers — Questions and Answers
Question 1: You want to refer to a page by a name (or alias) instead of a page number in the application URL. <br><br> Which step most accurately helps you achieve this?
- Go to Application Properties and set "Refer to page by name (or alias)" to "Yes".
- Set the Built-in substitution string PAGE_ALIAS on page load.
- Enter an alphanumeric name in the Page Title attribute.
- Enter an alphanumeric alias in the Page Alias attribute. (Correct answer)
Correct answer: Enter an alphanumeric alias in the Page Alias attribute.
Explanation: <br> Setting an alphanumeric alias in the Page Alias attribute allows you to refer to a page by name (or alias) instead of its page number in the application URL. This makes the URL more readable and user-friendly.
Question 2: Which processing point is enabled for computations during page processing?
- Processing (Correct answer)
- After Submit
- After Processing
- Validating
Correct answer: Processing
Explanation: <br> Computations during page processing are enabled at the "Processing" processing point. This point occurs after the page has been submitted but before any processing occurs, allowing computations to be performed before any other actions are taken.
Question 3: In Application Express, how do you enable a database schema assigned to the current workspace so that it can be used to serve ORDS-based RESTful Services?
- Install the Sample REST Services packaged application.
- Navigate to the Shared Components section and configure a REST Enabled SQL resource.
- Navigate to the ORDS RESTful services section of SQL workshop, select the appropriate schema, and click the "Register Schema with ORDS" button. (Correct answer)
- Navigate to workspace administration and in the Set Workspace Preferences section, set Enable RESTful Services to "Yes".
Correct answer: Navigate to the ORDS RESTful services section of SQL workshop, select the appropriate schema, and click the "Register Schema with ORDS" button.
Explanation: <br> This option directly addresses enabling a database schema assigned to the current workspace for serving ORDS-based RESTful services by registering the schema with ORDS. This step ensures that the schema can be utilized for RESTful service development within the workspace.
Question 4: Which is a predefined authentication scheme in Oracle Application Express?
- Universal Authentication Framework (UAF)
- HTTP Header Variable (Correct answer)
- SAML 2.0 Sign-On
- OpenID Connect Sign-On
- Client Certificate Authentication
Correct answer: HTTP Header Variable
Explanation: <br> HTTP Header Variable is a predefined authentication scheme in Oracle Application Express. It allows authentication based on the value of an HTTP header variable sent with the HTTP request.
Question 5: John has a form page with an email item and a status item. What must John do to ensure that the email item is populated before users can enter any value into the status item on the form page?
- Dynamic action on the email item
- Validation on the email item (Correct answer)
- Plug-in for the status item
- Server-side condition on the status item
Correct answer: Validation on the email item
Explanation: <br> By applying validation on the email item, John can ensure that the email field is populated before users can enter any value into the status item on the form page. This ensures that the required email field is filled out before proceeding to the next field, maintaining data integrity.
Question 6: David has created Page 10 as a form page using an Automatic Row Fetch process. A column named LOCATION has been added to the underlying table, and the form needs to include this new column. You decide to copy an existing page item :P10_DEPTNO and use that to represent the LOCATION column. <br><br> What is the minimum action required on the copied item to get the form working correctly?
- Set value required to No.
- Update the item name.
- Change the source type to NULL.
- Set the source database column to LOCATION. (Correct answer)
Correct answer: Set the source database column to LOCATION.
Explanation: <br> By changing the source type to NULL, the copied item will no longer be bound to any specific data source. This allows it to be repurposed for the new LOCATION column without conflicting with the existing data binding.
Question 7: Which is true about a workspace in Oracle APEX?
- It can be associated only with one schema.
- It can be associated with multiple schemas from different databases.
- It can be associated with multiple schemas in the same database. (Correct answer)
- It is not associated with any schemas.
Correct answer: It can be associated with multiple schemas in the same database.
Explanation: <br> In Oracle APEX, a workspace can be associated with multiple schemas within the same database. This allows developers to work with data from different schemas within the same workspace, providing flexibility in application development and management.
Question 8: Where is the Oracle APEX session state stored between calls from the browser?
- In the browser in the form of cookies (Correct answer)
- In the workspace schema
- In the APEX metadata schema
- Is passed back and forth between the database and browser with each call
Correct answer: In the browser in the form of cookies
Explanation: <br> Oracle APEX session state is typically stored in the browser in the form of cookies. These cookies maintain session information, allowing the application to maintain its state across multiple requests from the same user.
Question 9: Rick has created an ""editable"" interactive grid on a table that includes four audit columns: CREATED, CREATED_BY, UPDATED, and UPDATED_BY. <br><br> The four audit columns are included in the report with the read-only type set to Always. <br><br> How can Rick update all four audit columns when a user inserts a row, and the UPDATED and UPDATED_BY columns when a user updates a row?
- Using "Enable" Dynamic Actions (Correct answer)
- Using default values on the report columns
- Using After Header Computations
- Defining an After Submit process
Correct answer: Using "Enable" Dynamic Actions
Explanation: <br> Using "Enable" Dynamic Actions: Dynamic actions allow Rick to define actions that occur in response to specific events, such as row insertion or update in the interactive grid. By enabling dynamic actions, Rick can specify actions to update the audit columns accordingly when a user inserts or updates a row.
Question 10: Jane is creating a new application. Users of the application will use SSO to authenticate. SSO has been defined for the instance. <br><br> Which step should Jane perform in the Create Application Wizard?
- Under Authentication, select Single Sign On (SSO). (Correct answer)
- Include a Sign-In page in the list of pages.
- Include the Access Control feature.
- Update Advanced Settings to specify authentication.
Correct answer: Under Authentication, select Single Sign On (SSO).
Explanation: <br> Selecting Single Sign-On (SSO) under Authentication in the Create Application Wizard ensures that users of the application will use SSO to authenticate, as per the defined SSO setup for the instance. This step configures the application to utilize the existing SSO mechanism for authentication.
Question 11: Which two actions can be done by a Page Process of type Automatic Row Processing (DML)?
- Perform automatic detection of lost updates.
- Perform CRUD operations on multiple tables.
- Log a user-defined message when an exception is raised.
- Apply a SQL WHERE clause to append to all generated INSERT, UPDATE, and DELETE statements at run time. (Correct answer)
- Generate a primary key column value on a SQL INSERT statement.
- Invoke PL/SQL code to perform the inserts, updates, and deletes. (Correct answer)
Correct answer: Apply a SQL WHERE clause to append to all generated INSERT, UPDATE, and DELETE statements at run time.
Explanation: <br> Apply a SQL WHERE clause to append to all generated INSERT, UPDATE, and DELETE statements at run time. <br> This statement isn't a capability of Automatic Row Processing (DML) specifically. Automatic Row Processing focuses on handling insert, update, and delete operations on individual rows efficiently without directly manipulating the generated SQL statements. <br><br> Invoke PL/SQL code to perform the inserts, updates, and deletes. <br> This option is correct. Automatic Row Processing (DML) can indeed invoke PL/SQL code to perform the inserts, updates, and deletes.
Free Oracle APEX Developing Web Applications Questions and Answers
You want to refer to a page by a name (or alias) instead of a page number in the application URL.
Which step most accurately helps you achieve this?